Amage benhami Reuscher, Fiege & Wehe, 2009, sp. nov.

• Main Authors: Reuscher, Michael, Fiege, Dieter, Wehe, Thomas
• Format: Other/Unknown Material
• Language: unknown
• Published: 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Ampharetidae; Amage; Amage benhami; Antarctic; Ross Sea; Granite Harbor; Antarc*
• Online Access: https://zenodo.org/record/6219208; https://doi.org/10.5281/zenodo.6219208

Amage benhami sp. nov. (Fig. 1 a–g) Amage sculpta — Benham 1927: 121 -123, Tab. III, figs. 94–99. Specimens examined. Holotype, So 109 / 2, station 119 TVG, 44 ° 40.146 ' N, 125 ° 6.685 ' W, 625 m, 24.6.1996, 1 cs (SMF 17813). Additional specimens: Antarctic Terra Nova Expedition, Ross Sea: opposite of Granite Harbor, Station 340, 76° 56 ’S, 164 ° 12 ’E, 293 m, mud, 2 cs (BMNH 1928.2.29.2/ 3), det. Benham as Amage sculpta Ehlers, 1908. Description. Length of holotype 14 mm without anal cirri; width (excl. parapodia) 1.9 mm. Body almost broken in two parts between thorax and abdomen, held together by thin dermal ribbon on ventral side (Fig. 1 a). Anterior part of body broad, tapering gradually from unciniger 7. Prostomium with two conspicuous anterolateral horns (Fig. 1 b). No eye-spots. A pair of nuchal organs visible as oval fields framed by posterior U-shaped lobe (Fig. 1 b). Buccal tentacles withdrawn but tip of one tentacle visible, without papillae. Four pairs of branchiae. Left and right group of branchiae widely separated. First two branchiae of each group in transverse row on segment III (chaetiger 1). Third and fourth pair of branchiae on chaetiger 2 in diagonal row with outer branchiae of transverse row (Fig. 1 c). All branchiae broken off in holotype but number and arrangement visible as scars. First branchial segment protruding medially between branchiae. Chaetiger 2 (segment IV) divided dorsally into anterior and posterior part, each bearing one pair of branchiae (Fig. 1 c). 15 thoracic chaetigers from segment III, chaetae of first chaetiger broken. Thoracic notopodia with conspicuous digitiform process ventral to chaetal fascicle. 12 thoracic uncinigers. Anterior thoracic tori long, gradually shortening towards posterior end with first thoracic tori about twice as long as posteriormost. Ventral part of tori free from body wall. 15 abdominal segments with conspicuous rudimentary notopodia with bluntly digitiform tips. Abdominal neuropodia with minute dorsal papilla. Left and right neuropodia of ...